NON-CDL Log?

The requirement to run a log book and by extension an ELD depends on mileage, not weight. Pickups delivering rv trailers must run a logbook (eld exempt). 150 air miles or more requires logbook. Doing that 8 or more times in a rolling 30 day period requires eld.

 

There is a category of truck that has many of the requirements of a cmv, ie logging and driver files.

Here is something that discusses all requirements besides logging: CDL & Non-CDL Driver’s Files: What’s the Difference?

 

Logging requirements: Electronic Logs for Hotshot Drivers | Guide | Samsara

 

Logging requirements are 100% weight related. Any cmv with a gcwr (combined weight rating) of 10,001 or more requires logs. Period.
Now, if you drive under a specific mileage the log can be your timecard, but it's still a requirement to have a log.

 

Basically you need to combine fmcsa 390 and 395. 390 gives the definition of cmv, thus what fmcsa has jurisdiction of and 395 says all cmv's must log.
From 390.5
Commercial motor vehicle means any self-propelled or towed motor vehicle used on a highway in interstate commerce to transport passengers or property when the vehicle -
(1) Has a gross vehicle weight rating or gross combination weight rating, or gross vehicle weight or gross combination weight, of 4,536 kg (10,001 pounds) or more, whichever is greater; or

And from 395.1
§ 395.1 Scope of rules in this part.
(a) General.
(1) The rules in this part apply to all motor carriers and drivers,

 

Can you clarify ?

Over 10k lbs and 150 air miles requires a log . i thought it had to be a logbook in the vehicle ?